.revision-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-top: -.4px;
  margin-left: -2px;

  &.add {
    background: shade(@green, 10%);
  }

  &.mod {
    background: shade(@yellow, 2%);
  }

  &.del {
    background: shade(@red, 15%);
  }
}